7 Comments
May 26, 2022Liked by David B. Williams

Aw, I never knew they were originally clear!

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May 26, 2022Liked by David B. Williams

I’ve always wondered why they were purple and what their purpose was! Thank you!

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Jul 19, 2022·edited Jul 19, 2022

Is it safe to say that any prism light-esque squares on the ground in areas that most certainly don't have an "underground" are purely ornamental? I'm almost certain I've seen some in Ballard, and possibly Fremont.

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Something similar on sailing ships to light up the stowage or steerage, I believe.

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I've heard that the glass "tiles" at the top of the King Street Station tower are the same material, thus their purplish color.

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